页面代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></div>
</form>
</body>
</html>
后台代码:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ScriptManager1.RegisterAsyncPostBackControl(Button1); //指定Button1是异步刷新控件
UpdatePanel up = new UpdatePanel();
up.ID = "up1";
up.UpdateMode = UpdatePanelUpdateMode.Conditional; //指定更新模式
Label lbl = new Label();
lbl.ID = "lbl1";
lbl.Text = "www";
up.ContentTemplateContainer.Controls.Add(lbl);
up.ContentTemplateContainer.Controls.Add(TextBox1);
Page.Form.Controls.Add(up);
}
protected void Button1_Click(object sender, EventArgs e)
{
((Label)Page.Form.FindControl("lbl1")).ForeColor = System.Drawing.Color.Red;
TextBox1.Text = "我有名字了";
((UpdatePanel)Page.Form.FindControl("up1")).Update();
ScriptManager.RegisterClientScriptBlock(Page, GetType(), "Open", "alert('Server')", true);
}
}
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